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Credit: Getty Images

ARLINGTON, VA - NOVEMBER 11: U.S. President Barack Obama greets veterans and their families on Veteran's Day at the Tomb of the Unknown Soldier in Arlington National Cemetery on November 11, 2012 in Arlington, Virginia. Section 60 is the final resting place for the majority of casualties Operation Iraqi Freedom in Iraq and Operation Enduring Freedom in Afghanistan. (Photo by Michael Reynolds-Pool/Getty Images)